NDLI: Ion irradiation-induced modifications of diamond nanorods synthesised by microwave plasma chemical vapour deposition

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Ion irradiation-induced modifications of diamond nanorods synthesised by microwave plasma chemical vapour deposition

Content Provider	Taylor & Francis Online
Author	Taj, Javeria Yu, Guojun Rakha, Sobia A.
Abstract	Diamond nanorods (DNRs) synthesised by the high methane content in argon rich microwave plasma chemical vapour deposition (MPCVD) have been implanted with nitrogen ions. The nanorods were characterised by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The DNRs consist of single-crystalline diamond cores of 3–5 nm in diameter and several tens of nanometres in length. For purification from non-diamond contents, hydrogen plasma etching of DNRs was performed. Structural modifications of etched DNRs were studied after irradiating with 50 keV nitrogen ions under the fluence of 5 × 1014, 1 × 1015, 5 × 1015 and 1 × 1016 ions cm−2. Nitrogen-ion implantation changes the carbon–carbon bonding and structural state of the nanocrystalline diamond (NCD). Raman spectroscopy was used to study the structure before and after ion irradiation, indicating the coexistence of diamond and graphite in the samples. The results indicated the increase in graphitic and sp2-related content, at the expense of decrease in diamond crystallinity, for ion implantation dose of 5 × 1015 cm−2 and higher. The method proves valuable for the formation of hybrid nanostructures with controlled fractions of sp3–sp2 bonding.
Starting Page	555
Ending Page	564
Page Count	10
File Format	PDF HTM / HTML
ISSN	17458080 17458099
DOI	10.1080/17458080.2011.572190
Journal	Journal of Experimental Nanoscience
Volume Number	8
Issue Number	4
Language	English
Publisher	Taylor & Francis Group
Publisher Date	2013-04-17
Access Restriction	Open
Subject Keyword	Microwave plasma CVD Nanocrystalline Diamond film Ion implantation
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Science Bioengineering Biomedical Engineering

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